Just apply it sparingly to a clean, dry chain and your good to go. It the best longest lasting lube I've used. I've been using it for a few weeks now, I ride about 125 miles a week, and it is working great. It has been cool and damp, but it makes no difference to the performance of this product.
Easily the best lube I've used. Keeps my drivetrain shifting smoothly and silently. Doesn't keep your drivetrain as clean as a ceramic dry lube like One Ball and Finish Line but much quieter and seems to have less friction. Very viscous but since you only need 11-12 drops randomly applied to your chain it coats my entire drivetrain with a couple passes through the gears. Have put a few hundred miles on with this and can happily say I've found my new dry weather lube (previously used Finish Line and One Ball ceramic lubes, T9, Dumonde, ...)